SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Priority HIGH 77Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Why it matters now
EPSS 0.86383 99th percentileScored 2026-11-07
Fix Fixed Microsoft: 13 updates
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 to before 10.0.17763.3406 | 10.0.17763.3406 | Patch available | CNA |
| Microsoft | Windows 10 Version 1809 | 10.0.0 to before 10.0.17763.3406 | 10.0.17763.3406 | Patch available | CNA |
| Microsoft | Windows Server 2019 | 10.0.17763.0 to before 10.0.17763.3406 | 10.0.17763.3406 | Patch available | CNA |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 to before 10.0.17763.3406 | 10.0.17763.3406 | Patch available | CNA |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 to before 10.0.19043.2006 | 10.0.19043.2006 | Patch available | CNA |
| Microsoft | Windows Server 2022 | 10.0.20348.0 to before 10.0.20348.1006 | 10.0.20348.1006 | Patch available | CNA |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 to before 10.0.19042.2006 | 10.0.19042.2006 | Patch available | CNA |
| Microsoft | Windows 11 version 21H2 | 10.0.0 to before 10.0.22000.978 | 10.0.22000.978 | Patch available | CNA |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 to before 10.0.19044.2006 | 10.0.19044.2006 | Patch available | CNA |
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 to before 10.0.10240.19444 | 10.0.10240.19444 | Patch available | CNA |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 to before 10.0.14393.5356 | 10.0.14393.5356 | Patch available | CNA |
| Microsoft | Windows Server 2016 | 10.0.14393.0 to before 10.0.14393.5356 | 10.0.14393.5356 | Patch available | CNA |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 to before 10.0.14393.5356 | 10.0.14393.5356 | Patch available | CNA |
| Microsoft | Windows 7 | 6.1.0 to before 6.1.7601.26115 | 6.1.7601.26115 | Patch available | CNA |
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 to before 6.1.7601.26115 | 6.1.7601.26115 | Patch available | CNA |
| Microsoft | Windows 8.1 | 6.3.0 to before 6.3.9600.20571 | 6.3.9600.20571 | Patch available | CNA |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 to before 6.1.7601.26115 | 6.1.7601.26115 | Patch available | CNA |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 to before 6.1.7601.26115 | 6.1.7601.26115 | Patch available | CNA |
| Microsoft | Windows Server 2012 | 6.2.9200.0 to before 6.2.9200.23865 | 6.2.9200.23865 | Patch available | CNA |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 to before 6.2.9200.23865 | 6.2.9200.23865 | Patch available | CNA |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 to before 6.3.9600.20571 | 6.3.9600.20571 | Patch available | CNA |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 to before 6.3.9600.20571 | 6.3.9600.20571 | Patch available | CNA |
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3406 Fixed in 10.0.17763.3406 Patch available CNA
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before 10.0.17763.3406 Fixed in 10.0.17763.3406 Patch available CNA
- Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3406 Fixed in 10.0.17763.3406 Patch available CNA
- Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3406 Fixed in 10.0.17763.3406 Patch available CNA
- Windows 10 Version 21H1 VendorMicrosoft Affected 10.0.0 to before 10.0.19043.2006 Fixed in 10.0.19043.2006 Patch available CNA
- Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.1006 Fixed in 10.0.20348.1006 Patch available CNA
- Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.2006 Fixed in 10.0.19042.2006 Patch available CNA
- Windows 11 version 21H2 VendorMicrosoft Affected 10.0.0 to before 10.0.22000.978 Fixed in 10.0.22000.978 Patch available CNA
- Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19043.0 to before 10.0.19044.2006 Fixed in 10.0.19044.2006 Patch available CNA
- Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.19444 Fixed in 10.0.10240.19444 Patch available CNA
- Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5356 Fixed in 10.0.14393.5356 Patch available CNA
- Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5356 Fixed in 10.0.14393.5356 Patch available CNA
- Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5356 Fixed in 10.0.14393.5356 Patch available CNA
- Windows 7 VendorMicrosoft Affected 6.1.0 to before 6.1.7601.26115 Fixed in 6.1.7601.26115 Patch available CNA
- Windows 7 Service Pack 1 VendorMicrosoft Affected 6.1.0 to before 6.1.7601.26115 Fixed in 6.1.7601.26115 Patch available CNA
- Windows 8.1 VendorMicrosoft Affected 6.3.0 to before 6.3.9600.20571 Fixed in 6.3.9600.20571 Patch available CNA
- Windows Server 2008 R2 Service Pack 1 VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.26115 Fixed in 6.1.7601.26115 Patch available CNA
- Windows Server 2008 R2 Service Pack 1 (Server Core installation) VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.26115 Fixed in 6.1.7601.26115 Patch available CNA
- Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.23865 Fixed in 6.2.9200.23865 Patch available CNA
- Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.23865 Fixed in 6.2.9200.23865 Patch available CNA
- Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20571 Fixed in 6.3.9600.20571 Patch available CNA
- Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20571 Fixed in 6.3.9600.20571 Patch available CNA
CPE configurations NVD · 30
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* | 20h2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* | 20h2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* | 20h2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* | 21h1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* | 21h1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* | 21h1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* | 21h2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* | 21h2 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* Versions 20h2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* Versions 20h2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* Versions 20h2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* Versions 21h1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* Versions 21h1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* Versions 21h1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* Versions 21h2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* Versions 21h2 Vulnerable ·Microsoft
Show 20 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* | 21h2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* | 1607 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* | 1607 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* | 1809 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* | 1809 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* | 1809 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:rt:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* | r2 sp1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:azure:*:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* Versions 21h2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* Versions 1607 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* Versions 1607 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* Versions 1809 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* Versions 1809 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* Versions 1809 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:rt:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:azure:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
Microsoft 13 updates
- Security Hotpatch Update
- Windows Server 2022 10.0.20348.916
- Windows Server 2022 (Server Core installation) 10.0.20348.916
- Security Only
- Windows Server 2012 6.2.9200.23865
- Windows Server 2012 (Server Core installation) 6.2.9200.23865
- Security Only
- Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.26115
- Windows 7 for x64-based Systems Service Pack 1 6.1.7601.26115
- Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.26115
- Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.26115
Show 10 more Microsoft updates
- Monthly Rollup
- Windows Server 2012 6.2.9200.23865
- Windows Server 2012 (Server Core installation) 6.2.9200.23865
- Monthly Rollup
- Windows 8.1 for 32-bit systems 6.3.9600.20571
- Windows 8.1 for x64-based systems 6.3.9600.20571
- Windows RT 8.1 6.3.9600.20571
- Windows Server 2012 R2 6.3.9600.20571
- Windows Server 2012 R2 (Server Core installation) 6.3.9600.20571
- Security Only
- Windows 8.1 for 32-bit systems 6.3.9600.20571
- Windows 8.1 for x64-based systems 6.3.9600.20571
- Windows Server 2012 R2 6.3.9600.20571
- Windows Server 2012 R2 (Server Core installation) 6.3.9600.20571
- Monthly Rollup
- Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.26115
- Windows 7 for x64-based Systems Service Pack 1 6.1.7601.26115
- Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.26115
- Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.26115
- Security Update
- Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.978
- Windows 11 version 21H2 for x64-based Systems 10.0.22000.978
- Security Update
- Microsoft .NET Framework 3.5 AND 4.6/4.6.2 10.0.10240.19444
- Windows 10 for 32-bit Systems 10.0.10240.19444
- Windows 10 for x64-based Systems 10.0.10240.19444
- Security Update
- Windows Server 2022 10.0.20348.1006
- Windows Server 2022 (Server Core installation) 10.0.20348.1006
- Security Update
- Windows 10 Version 1809 for 32-bit Systems 10.0.17763.3406
- Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.3406
- Windows 10 Version 1809 for x64-based Systems 10.0.17763.3406
- Windows Server 2019 10.0.17763.3406
- Windows Server 2019 (Server Core installation) 10.0.17763.3406
- Security Update
- Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.2006
- Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.2006
- Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.2006
- Windows 10 Version 21H1 for ARM64-based Systems 10.0.19043.2006
- Windows 10 Version 21H1 for x64-based Systems 10.0.19043.2006
- Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.2006
- Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.2006
- Windows 10 Version 21H2 for x64-based Systems 10.0.19044.2006
- Security Update
- Windows 10 Version 1607 for 32-bit Systems 10.0.14393.5356
- Windows 10 Version 1607 for x64-based Systems 10.0.14393.5356
- Windows Server 2016 10.0.14393.5356
- Windows Server 2016 (Server Core installation) 10.0.14393.5356
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Remote Code Execution
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
Timeline
- 2026-10-02 Threatist record created from CVE-2022-37958
- 2026-10-03 Alias added: GHSA-w9jc-m3x9-g758
References
More Microsoft Windows 10 vulnerabilities
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- TI-2022-06273 HTTP Protocol Stack Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2019-00906 Remote Desktop Services Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2022-15533 Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2015-01587 Mount Manager in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows… KEVCVSS 3.1MEDIUM 6.6
Sources
- CVE-2022-37958 · CVE Program
- CVE-2022-37958 · NVD
- FIRST EPSS
- GHSA-w9jc-m3x9-g758 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-37958 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences